Investigations reveal neural dynamics encoding perceptual and motor aspects in macaques during tapping tasks, implying deeper understanding of rhythm synchronization mechanisms.
Key Points
This investigation aims to understand the neural population mechanisms involved in attending and synchronizing movements to external rhythms.
Recorded neural activity from the medial premotor cortex of two macaque monkeys
Conducted an attend-then-synchronize tapping task with visual metronomes
Analyzed neural trajectories and their dynamics during attention and tapping phases
Identified low-dimensional neural manifolds capturing population trajectories
Increasing amplitude and oscillatory strength observed during the attention epoch
Shift to a distinct manifold subspace during the transition from perception to tapping
More robust oscillatory structure was present in correct tapping trials compared to incorrect ones